# 系统自带的函数
l=range(1,9)
# for i in l:
#     print(i)
a = max(range(9))
print(a)
# print()
# a = input()
# b = input()
# print(int(a)+int(b))
# int()
# len()
a='water'
b=100
print(f'水的英文是:{a}')
print(f'一斤{a}={b}元钱')
print(f'10斤{a}={b*10}元钱')
c = f'10斤{a}={b*10}元钱'
print(c)